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40Ar/39Ar Ages for Emperor Seamounts from ODP Leg 197: sample 1206-20R-3 70-72cm |
Radiometric age on whole rock from Koko Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. Mean age for site 1206 samples: 49.16 ¿ 0.21 Ma. |
Data Types: graphs, spreadsheet |
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40Ar/39Ar Ages for Emperor Seamounts from ODP Leg 197: sample 1206-41R-1 9-12cm |
Radiometric age on whole rock from Koko Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. Mean age for site 1206 samples: 49.16 ¿ 0.21 Ma. |
Data Types: graphs, spreadsheet |
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40Ar/39Ar Ages for Emperor Seamounts from ODP Leg 197: sample 1206-44R-2 120-125cm |
Radiometric age on whole rock from Koko Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. Mean age for site 1206 samples: 49.16 ¿ 0.21 Ma. |
Data Types: graphs, spreadsheet |
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40Ar/39Ar Ages for Emperor Seamounts from DSDP Leg 19: sample 192A-6R-2 7-14cm |
Radiometric age on feldspar from Meiji Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. |
Data Types: graphs, spreadsheet |
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40Ar/39Ar Ages for Emperor Seamounts from DSDP Leg 19: sample 192A-6R-2 75-81cm |
Radiometric age on whole rock from Meiji Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. |
Data Types: graphs, spreadsheet |
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40Ar/39Ar Ages for Emperor Seamounts from DSDP Leg 19: sample 192A-6R-3 3-9cm |
Radiometric age on feldspar from Meiji Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. |
Data Types: graphs, spreadsheet |
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40Ar/39Ar Ages for Emperor Seamounts from ODP Leg 197: sample 1206-24R-3 37-39cm |
Radiometric age on whole rock from Koko Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. Mean age for site 1206 samples: 49.16 ¿ 0.21 Ma. |
Data Types: graphs, spreadsheet |
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Magnetic Reversals Based on Dipole and Nondipole Field Strength |
The figure shows data for the different strengths of both the dipole and non-dipole fields. Magnetic reversals occur when the field strength of the non-dipole field is large relative to the strength of the dipole field. The data shows two reversals occurring at the beginning and end of segment T. |
Data Types: graphs |
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40Ar/39Ar Ages for Emperor Seamounts from ODP Leg 197: sample 1205-5R-2 30-34cm |
Radiometric age on whole rock from Nintoku Seamount within the Emperor Seamount chain by the 40Ar/39Ar incremental heating method. |
Data Types: graphs, graphs, spreadsheet |
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Direction of Changing Magnetic Poles based on Basalt Samples in Japan |
The figure shows the varying directions the magnetic pole has taken based on basalt samples in Japan. The samples span over a time period that begins in the early Quaternary and ends in the Tertiary. Using the locations on the graph and their respective time periods, it can be seen that th ... |
Data Types: diagram, graphs |
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Illustration of a Geomagnetic-Polarity Timescale |
This image displays geomagnetic-polarity epochs and their correlation to an age in millions of years and a specific magnetic anomaly. The age of the seafloor is based on K-Ar dating. Blue anomalies represent normal magnetic polarities and red anomalies are reversed magnetic polarities. |
Data Types: diagram |
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Magnetic Anomaly Data for Multiple Seafloor Locations |
Each section of seafloor has two graphs representing the two magnetic profiles taken at the same location. The data from the two profiles at each location is combined in the third graph to filter out variances in the measurement of the magnetic field. Measurements below the axis represent ... |
Data Types: graphs, cross section |
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Magnetic Reversal Video Along a Spreading Center |
This video from the ScienceProf website shows the Earth's magnetic field reversing. The magnetic field direction is recorded in lava erupting to the surface at spreading centers. Scientists can analyze the magnetic anomalies in oceani ... |
Data Types: animation |
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Geomagnetic dipole moment 3ka |
The five files contain the geomagnetic dipole moment as given by five continuous, spherical harmonic magnetic field models for the past 3ka. The models, named CALS3k.3, CALS3k_cst.1, ARCH3k.1, ARCH3k_cst.1 and SED3k.1 are based on different subsets of available archeo- and paleomagnetic dat ... |
Data Types: data compilation |
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High resolution 40Ar/39Ar ages for the Gilberts Ridge: sample AVON2-14-7 |
Groundmass 40Ar/39Ar age for the small Palutu seamount in the Gilberts Ridge seamount trail in the Southwest Pacific basin. Sample AVON2-14-7 is sampled at 3040-2230 m depth. This upload contains the ArArCALC v2.4 age calculation file and the same file in the Microsoft Excel 2000 format. |
Data Types: graphs, spreadsheet |
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High resolution 40Ar/39Ar ages for the Gilberts Ridge: sample AVON2-17-28 |
Groundmass and hornblende 40Ar/39Ar ages for the very small Kautu seamount in the Gilberts Ridge seamount trail in the Southwest Pacific basin. Sample AVON2-17-28 is sampled at 4279-3188 m depth. This upload contains the ArArCALC v2.4 age calculation file and the same file in the Microsof ... |
Data Types: graphs, spreadsheet |
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Gravity Lineations Intraplate Melting Petrologic and Seismic Expedition: sample D3-1 |
Non-hotspot seamount or volcanic ridge west of the East Pacific Rise, in a region of very fast seafloor spreading. Whole rock from dredge D3-1, Matuavolcanic province. |
Data Types: graphs, spreadsheet |
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Gravity Lineations Intraplate Melting Petrologic and Seismic Expedition: sample D4-1 |
Non-hotspot seamount or volcanic ridge west of the East Pacific Rise, in a region of very fast seafloor spreading. Whole rock from dredge D4-1, Matua volcanic province. |
Data Types: graphs, spreadsheet |
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Gravity Lineations Intraplate Melting Petrologic and Seismic Expedition: sample D7-1 |
Non-hotspot seamount or volcanic ridge west of the East Pacific Rise, in a region of very fast seafloor spreading. Whole rock from dredge D7-1, Matua volcanic province. |
Data Types: graphs, spreadsheet |
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Gravity Lineations Intraplate Melting Petrologic and Seismic Expedition: sample D9-1 |
Non-hotspot seamount or volcanic ridge west of the East Pacific Rise, in a region of very fast seafloor spreading. Whole rock from dredge D9-1, Matua volcanic province. |
Data Types: graphs, spreadsheet |
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